Friction-plate draft-gear with antifriction wedging members.



i 1'. F. 0101111011. FBICTWN PLATE DRAFTGEAR. WITH ANTIFRICTJON WEDGING MEMBERS.

APPLICATION man MAY 21. 1911.

1,300,463. farented Apr. 15,1919..

1 g mvzgwrox. WITNESSES: Ja/wflfllbwr 1 BY 4%JQ w ATTO EY alli'whom it may concern UNITED. STATES PATET' OFFICE.

Joan r. oco'mron, or cmcae nrmors, ASSIGNOR'TO WILLIAM B. MINER, or onnzy,

' NEW YORK.

JiRIC'I'ION-PLATE DRAM-GEAR. WITH ANTIKRICTION WEDGING MEMBERS.

Specification of Letters latent.

Patented Apr.-1 5, -1919.

Application filed May 21, 1917. Serial No. 170,023.

Be it known that I, JOHN F. QCONNOIi,

United States, residing at 1no1s, have invented a certain new and useful Improvement in Friction-Plate Draft Gears, with Antifriction Wedgin Members, of which the clear, concise,

following is a ful and exact description, reference being had to the accompanying draw- 'in'gs, forming a part ofthis specification.

friction. The 0 ject of my inventlon 1s specification, Figure 1 is My invention relates to improvements in late draft rigging for railway cars. to provide an efficient draft rigging. i

In the drawings "forming a part of this a horizontal section of a draft'rigging embodying my inv section taken on View of one of the stationary plates; and Fig. 4'is an enlarged internal View of one I 1. bers andis' supported in its 1 tie-plate 14 which is 17. A front. follower 18 is,

side of the front portion of the shell. l

- Referring to the drawings, the numerals 1010 indicate center sills or draft membeing the parts of the car underframe front stop members are shown at 11-11, and

the rear stop members at 1212. The draft gear 13 is mounted betweenthe draft memposition by the removably secured to the draft members, as,-'for instance, by the bolts 15-.15. By'means of a yoke 16 the draft gear 13 is connected to the'draw-bar';

together with the draft gear, mounted within the yoke. The draft gear. 13 comprises a shell 19 open at its front end and closed at its rear end by the preferably integral plate 20 which serves as a rear follower. Within the shell are the spring elements 120 and the friction elements 21. The friction elements comprise the sets of friction plates 21- and 22 arranged at either side of the shell at its forward end. Each set of friction plates comprises the alternately arranged stationary plates 24; and the movable plates 25. The statlonary plates 24 are provided at their upper and lower ends with the rotruding portions or lugs 26 which are a apted to enter the recesses 27-1-27 provided in the upper and-lower portions, respectively,of the shell to p revent the longitudinal movementof the said plates whileg a-jlatera'l movement therein.

The movable 'the spreading member the resistance of the springs 120 which are plates are seated at their rear ends against 1n the-normalposition of .the parts of. the gear, as shown in Fig. 1 of the drawings is spaced away from the rear edges of the stationary; plates.

two sets of friction plates is a spreading de:

vice 29 which engages the front follower 18. at one end and the internal follower 28 at the other. The said spreading device conslsts of a pair of oppositely arranged L- shaped members having substantially parallel outer faces 30 wedging faces 31-31, there a pllfrality for instance, two of these, as shown in flha drawing, with the anti-friction rollers 32 interposed.

In normal position provided between the front ends of the movable friction plates, as indicated at the numeral 33 in-Fig. l of the drawings, so that.

on rearward movement of thedraw-bar the front follower moves rearwardly against seated between the internal follower 28 and the rear member 20 of the shell until the front follower 18 engages the front ends of' the movable friction plates. The friction plates are pressed into engagement with each other by the spreading member, and the movable plates as they are forced rearwardl by the front follower resist the front fol lower through their frictional engagement" between the movable plates. V

On-forward movement of the draw-bar, the shell is drawn forwardly by the yoke, the

springs exert pressure against the internal follower '28,.and the said follower forces the front follower 18, thus creating friction bean internal follower 28 which rearwardly, driving movable plates forwardly and spreads; the. spreading device 29 between it and the Interposed between-"the I and the opposed internal being preferably of the parts, a space is tween the movableand the immovable plates and resisting the forward movement of; the

shell in a manner that stood.

I claim:

will be readilyund'er'-- In a friction shock absorbing mechanism,

the combination with 'a shell; of a plurality of friction plates mounted within said 511011 and'immovable longitudinally "thereofipf a pluralityv of friction plates respect tosaid immovable friction plates and adapted] to slide between said immovable P s; sp i g w j imx a d: sh ll and 11 o alternated with,

adapted to resist relative movement between surfaces, said wedgingmeans being-located lo I a said movable friction plates and the-shell; eentrallyof the friction 'plates with'substanand wedging means, associated with said tially one-half of the latter oneach side friction plates, said'wedging means comthereof. Prising two opposed members having fouter In witness that I claim the foregoing I substantially parallel iaces and provided on have hereunto subscribed my name this 30th 15 their inner-opposed faces with duplicate sets day of April, 1917.

of wedge surfaces, and. a pair of anti-110 tion rollers interposed between said wedge JOHN F. OCONNOR. 

